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common-errors.md

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Errors

A list of some of the errors you might run into when developing on Smart Answers locally.

"NoMethodError" when visiting the root URL

You'll see this error if you visit the root URL of the Smart Answers app (e.g. http://localhost:3000 or http://smartanswers.dev.gov.uk/). This is because we don't have anything configured to respond at this path.

Exception

NoMethodError at /
undefined method `to_html' for nil:NilClass

Resolution

Visit a specific Smart Answer, e.g. /marriage-abroad.

"SocketError" when viewing a Smart Answer (relating to Content Store)

NOTE. This is specifically when the exception is raised in SmartAnswerPresenter#artefact.

You'll see this error if the Smart Answers app can't connect to the Content Store.

Exception

SocketError at /marriage-abroad
Failed to open TCP connection to content_store.dev.gov.uk:80 (getaddrinfo: nodename nor servname provided, or not known)

Resolution

There are a couple of solutions to this problem:

  1. Set the PLEK_SERVICE_CONTENT_STORE_URI environment variable to a valid host. NOTE. This doesn't need to be hosting the Content Store (although you can use "https://www.gov.uk/api" if that's what you want), it simply needs to be a host that responds to HTTP requests.

  2. Configure a web server (e.g. Apache) on your machine to respond to http://content_store.dev.gov.uk. This is the default location of the Content Store in development so configuring this means that you won't have to set the PLEK_SERVICE_CONTENT_STORE_URI environment variable.

"SocketError" when viewing a Smart Answer (relating to Worldwide API)

NOTE. This is specifically when the exception is raised in methods like WorldLocation#find, WorldLocation.all or WorldwideOrganisation.for_location which try to access the Worldwide API.

You'll see this error if the Smart Answers app can't connect to the Worldwide API.

Exception

SocketError at /marriage-abroad/y
Failed to open TCP connection to whitehall-admin.dev.gov.uk:80 (getaddrinfo: nodename nor servname provided, or not known)

Resolution

There are a couple of solutions to this problem:

  1. Set the PLEK_SERVICE_WHITEHALL_ADMIN_URI environment variable to "https://www.gov.uk".

  2. Configure a web server (e.g. Apache) on your machine to respond to http://whitehall-admin.dev.gov.uk. This is the default location of the Worldwide API in development so configuring this means that you won't have to set the PLEK_SERVICE_WHITEHALL_ADMIN_URI environment variable.

"Slimmer::CouldNotRetrieveTemplate" when viewing a Smart Answer

You'll see this error if the Smart Answers app can't connect to the Static host.

Exception

Slimmer::CouldNotRetrieveTemplate at /marriage-abroad
Unable to fetch: 'wrapper' from 'http://static.dev.gov.uk/templates/wrapper.html.erb' because getaddrinfo: nodename nor servname provided, or not known

Resolution

There are a couple of solutions to this problem:

  1. Set the PLEK_SERVICE_STATIC_URI environment variable to "https://assets-origin.integration.publishing.service.gov.uk", which is the static/assets server running in integration.

  2. Run the static/assets server locally at http://static.dev.gov.uk. This is the default location of the static/asset server in development so configuring this means that you won't have to set the PLEK_SERVICE_STATIC_URI environment variable.